What is the likely benefit of using pier foundations in coastal regions?

Using pier foundations in coastal regions offers significant resistance to flooding, which is a crucial factor in areas prone to storm surges and high water levels. Pier foundations elevate structures above potential floodwaters, minimizing damage during inundation events. This elevation provides a buffer against rising water, which can prevent structural degradation and loss of property.

In addition to flood resistance, using piers can help reduce soil erosion and limit the impact of shifting sands and sediments typically seen in coastal areas. The reduced contact with potentially unstable or saturated soils further enhances stability.

While factors such as cost-effectiveness, ease of inspection, and flexibility in design are relevant considerations for foundation types, the primary advantage in coastal environments specifically relates to their enhanced performance against flooding risks. Therefore, the benefit of flood resistance is particularly critical and underscores why pier foundations are often preferred in such locations.